Shuttle-guard.



W. HAINSWORTH & R. UNDERWOOD.

SHUTTLE GUARD. APPLICATION FILED JAN.26.1916.

1,182,476. Patented May 9, 1916.

2 SHEETSSHEET I.

SHUTTLE GUARD.

APPLICATION FILED JAN-26,1916.

Patented May 9, 1916.

2 SHEETSSHEET Z.

awe/W56 q vi Mwmwo 7 a 1? m UNTTED TATE PATEFJE WILLIAM HAINSWORTH AND RALPH UNDERW' 001), OF JAMESTO'WN, NEW/V YQRK.

SHUTTLE-GUARD.

Specification of Letters Patent.

Far-tented May 9, 19113.

To all whom it may concern Be it known that we, WILLIAM Hamswon'rn and RALPH Unnnnwoon, citizens of the United States, residing at the city of Jamestown, in the county of Chautauqua and State of New York, have invented cer tain new and useful Improvements in Shuttle-Guards, of which the following, taken in connection with the accompanying drawings, is a specification.

The invention relates to looms and is an improvement upon the shuttle guard construction shown inour application for Letters Patent filed April 19th, 1915, Serial No. 22,247 and the object of the improvement is to provide a simpler and stronger construction which'is semi-automatic in its action, which more completely guards the operator and is more convenient for the weaver to operate; and the invention consists in the novel features and combinations hereinafter set forth and claimed.

In the drawings, Figure 1 is a perspective view of the hancl-rail of the loom with the shuttle guard attached thereto in the open position above the warp threads; and Fig. 2 is a similar View with the shuttle guard in the folded or closed position and the shuttle about to pass into the box. Fig. 3 is an elevation of one of the bracket pieces for attaching to the hand-rail and one of the pivotally mounted supports with a portion of the guard rods and the operating spring connecting said rods, the parts beingshown in the closed position with the spring extended. Fig. 4; is a top plan view of a long hand-rail for a loom for weaving wide cloth showing a double section shuttle guard construction, each of said sections folding in opposite directions toward the shuttle box and away from the center of the hand-rail. Fig. 5 is a sectional view at line X X in Fig. 2, of the hand-rail and lay beam of the loom with the warp threads extending there through and the shuttle inposition between the threads. Fig. 6 is a front elevation of one of the brackets and pivotally mounted supports with a portion of the guard rods attached thereto in the open position; and Fig. 7 is a top plan view of the same. Fig. 8 is an elevation of one of the pins or rivets for pivotally attaching the guard rods to the supports.

Like characters of reference refer to corresponding parts in the several views.

The numeral 10 designates the hand-rail and 11 the lay beam or shuttle board of the loom.

The numeral 12 designates the warp threads and the numeral 13 the shuttle and 14 the shuttle bones.

The shuttle guard comprises a pair of light guard rods 15 which are pivotally attached tothe underside of the support pieces 1.6, which supports are riveted or hinged to the bracket Plates 17 by a pin 18, the pin or rivet 18 being formed with a shoulder 19 midway of its length to hold the rods 15 in such a manner as to insure free pivotal movement. The rods 15 are provided with sidewise lugs 20 having a hole 21 therethrough for the rivet 18. This arrangement insures free pivotal action of all the parts and when the bracket plates 17 are attached to the hand-rail, supports the guard rods 15 lengthwise of the hand-rail in front of the same over the track of the shuttle.

The bracket 17 is preferably struck from a sheet metal plate with holes 22 therein for attachment to the hand-rail and an outwardly projecting lug 23 to which the support piece 16, is pivotally attached. The outer end of the lug and inner end of the support piece 16 is rounded at one corner 2 1 and square at the other 25 so aS to permit said support 16 to pivotally turn sidewise toward the hand-rail from the round corner 2% and in one direction only, the square corner 25 of the support 16 providing a positive stop against the bracket plate 17 and the square corner of the lug 23 simultaneously striking; against the wall of the downward bend 2G in the support piece 16, the support piece 16 being provided with downwardly bent steps to support the rods 15 one below the other to better cover the track of the shuttle 13. This arrangement brings the outer rod 15 fairly close to the warp threads 12, as shown in Fig. 5.

- n order that the rods 15 and supports 16 may fold closely against the side of the hand-rail 10, .a notch 28 is provided in the outer vertical bend 26 of the support piece 16, which notch 28 receives the upper rod 15 when the rods and support pieces 16 are turned sidewise. The friction of the rod 15in the notches 28 being suflicient to assist in holding the shuttle guard in the folded position. The control ofthe shuttle guards is largely attained, however, by means of a between the rods 15, the opposite ends of the spring 29 being attached one end to the outer and the other to the inner rod. This arrangement of the spring 29 exerts the full force of said spring to throw the rods 15 to I the open or extended positionexcept when said rods are. turned to the closed position or flat againstthe hand-rail 10, in which position the spring 29 while it is given its maximum extension, being straight in line with the rods 15 is on a dead center and does not exert a sidewise p'ull'toward the open position but assists in holding the shuttle guard in the. closed position, so that the weaver or operator can easily push the shuttle guard back against the hand-rail l0 and it will stand in that position until manually moved or until the movement of the hand rail 10 in starting the, loom shakes it free when it immediately flies to the open position; This arrangement makes the ac tion of the shuttle guard semiautomatic, that is, it has to be manually placed in the closed position but the starting of the loom with the reciprocative "movement of the hand-rail 10 automatically throws the shuttle guard into the extended or guarding position. 7

When the hand-rail 1s of any conslderable V lengtln'as. for weaving fabrics above a narrow width, it is preferable to provide a double shuttle guard, that is, two shuttle guards on the hand-rail as shown in Fig. 4:, eachof said shuttle guards opening toward the center of..the rail and closing toward the shuttle boxes or ends of thehand-rail, the positive stops 25 being toward the center of the rail for each of the two shuttle guards since they move in opposite directions. This arrangement provides a positive stop for the shuttle l3when it flies out of the warp and strikes any portion of the shuttle guard. This usually happens as the shuttle leaves the box 1% and mounts the warp threads '12, being deflected by some lump or knot which turns the course of the shuttle 13, causing it to fly outward or upward.

It is apparent that the semi-automatic action of the shuttle guard by the springs 29 attached to the rods 15 and the arrangement of the positive stops 25 placed in opposite directions in the double guard gives greatly added protection to the weaver and is of great convenience over our former construction in which the weaver had to operate a latch or lock to release or hold the shuttle guard. The new arrangement of the spring 29 attains this object far better and permits the free semi-automatic action of the shuttle guard.

l/Ve claim as new 1- 1. 'A shuttle guard for looms comprising a handrail, spaced brackets on said handrail, support pieces pivotally attached to spaced rods pivotally attached to the under-- side of said support pieces to fold there with, one of said rods folding into said notch, a coil spring attached at one end to the inner rod and at the other end'to the outer rod at an inclination in the direction to which said shuttle guard is folded, and a positive stop for said shuttle guard against folding in the opposite direction. I

3. A shuttle. guard for looms comprising a hand-rail, separate parts of said shuttle guard one for each half of said hand-rail each part folding sidewise away from the center of said rail to the folded position and toward the center of said rail to the extended position, and positive stops on each of said parts of said shuttle guard to prevent said guards moving beyond said ex tended position.

4. A shuttle guard for looms comprising the combination with a handrail of a twopart guard each having spaced brackets on said hand-rail with projecting lugs, support pieces pivotally attached to said brackets to fold sidewise in one direction only, each of said support pieces of each of said parts folding toward its end of said hand-rail, a

an angle toward the respective end of said handrail toward whi h it folds to aid in operating the respective parts of said shuttle guard.

In testimony whereof we have aliixed our.

signatures in the presence of two witnesses.

WILLIAM HAINSWORTH. RALPH UNDERWOOD. Witnesses H. O. SANDBERG, A. WATTLE.

Copies of this patent may no obtained tor'fivecents each, by addressing the Commissioner of Patents,

' Washington, D. (2." 

